On a side note, I think random battles would do a lot in terms of teaching people about the value of natures. I think the biggest problem in PWO is the general ignorance of the population in regards to the actual mechanics of a fully functioning game. Random battles will teach people some basic movesets and strategies without making them have to commit to catching and training a pokemon to do so. It will teach them with relatively low amounts of effort on their part which is great honestly.
We have a lot of people who still think switching is bad, and that needs to change. We have a lot of people who think IVs mean everything
only because they don't do switching battles, and that needs to change. I mean for crying out loud half of my team are TS pokes with some crucial ivs under 20 and I go on 10-15+ battle winning streaks simply because I know how the game works.
Natures are the way this stall crap will be mitigated into less of a problem, however stall tactics were always strong up until the advent of mega pokemon due to the outright advantage tanky stats have over offensive ones in terms of calculation, prediction, and counter-play options.
I would like to point out that 8 of the top 10 pokemon used during the opening of the Black and White era in April of 2011 were all tanks, or tanky in general in terms of their base stats and typing.
APR 2011 BW OU USAGE
Total Battles: 299644
+ ---- + --------------- + ------ + ------- +
| Rank | Pokemon | Usage | Percent |
+ ---- + --------------- + ------ + ------- +
| 1 | Ferrothorn | 127997 | 21.3582 |
| 2 | Tyranitar | 124735 | 20.8139 |
| 3 | Scizor | 112589 | 18.7871 |
| 4 | Garchomp | 109670 | 18.3000 |
| 5 | Gliscor | 89599 | 14.9509 |
| 6 | Latios | 78471 | 13.0940 |
| 7 | Excadrill | 78095 | 13.0313 |
| 8 | Reuniclus | 76510 | 12.7668 |
| 9 | Heatran | 72800 | 12.1477 |
| 10 | Rotom-W | 69963 | 11.6744 |
Ferrothorn - rocks setting, leecher, killer of dreams.
Tyranitar - bulky sand machine that boosts its special defense in sand.
Scizor- Only weak to fire, huge physical defense, tons of special resistances, and can potentially carry roost on some variants. This is what nightmares look like.
Garchomp - Some go with offensive spreads but generally speaking ....rough skin ability + rocky helmet. I don't even want to talk about how disgusting this is.
Gliscor - poison heal OP
Reuniclus - Magic guard + recover + calm mind. Can't even status me bro.
Heatran - Great defensive typing and stats. The weakness to ground can be dealt with by letting him float with a balloon like Winnie-the-Pooh. This guy is like the melting person from Terminator 2. He is scary, metal, wants to kill you, and is nearly impossible to kill. OH WAIT, this guy has flash fire so you can't even melt him.
Rotom-W - Volt-switch pivot with pain split and one of the best sets of defensive typing in the game. Whoever thought this pokemon was a good idea....just.....-sigh-
My name is Fluffy. LOVE MEEEE!!!!
If old pokemon (shinies and nonshinies) are kept neutral, then you will just further advance the march of the tank regime making the overall mass of pokemon in the game useless for anything other than tanking. Not to mention the concept that most of the things that fight these tanks also need speed to be relevant.
Tanks are so overpowering that megas are literally the way to handle them. If we have to go and re-catch everything, shiny or not, that means that it is just more imbalance to the game than it already has in terms of offense vs defense.