On the Beta forums, I saw someone bring up a concept similar to AION's Spiritmaster, where as the class leveled, their pets became more detailed and subsequently larger. It's my hopes SE can implement something similar. As it stands now, I have no issue with the size or appearance of our Egis. I love the lore behind our Egis and to me it makes perfect sense how they work story-wise and their implementation in-game. However, looking at the future, a level 100 Summoner should be able to command something much more formidable than a level 30 Summoner.