No, wallhax are not ok, but I don't think you can do that straight from the console, as far as I know anyways.
Custom texture...
People should be allowed to include custom textures with their custom maps. But the game should be such that only the intended graphics and models should be allowed, custom or otherwise.
I used modified ball models, and modified splat, ball, and character skins before I joined eR33t. I didn't do anything extreme like long spikes on the characters. I simply tried to improve visibility a bit. IMHO it was cheating and something I no longer do. But, to me, it was no more cheating than the LEGAL HUD modifications designed to improve one's ability to view the state of game with a mere glance beyond what the game developer intended. If the developer of this game was more involved in the competition aspect of this game he would readily understand how HUD mods can be an unfair advantage.
In order for this game to be played on equal ground, no part of it should be changeable (beside custom maps).
The bind system is argumentative. It's been around a long time, and could be considered as offering a player an unfair advantage, but it is available equally to every player.
nubs will come, nubs will go. It's the same as every game out there. nubs will get owned. If the interest is there, nubs will continue to play, learn, and get better.
Content verification would be the best thing to happen to this game. I pray for that day. I pray for the day 80% of this community quits or drops dramatically in apparent skill because they can no longer use their modified models and skins to gain their unfair advantage.