The design space of putting stun counters on lands feels like a great way to enable "land destruction" in Standard (since normal land destruction is the woooooorrrsssttt)
Whether you decide to go with a matte finish or a glossy finish will ultimately depend on personal preference and/or brand aesthetic, but there are some practical considerations to keep in mind as well
For every person enamored with the idea of seeing the artist responsible for the art of a card physically signing the card itself, there are a dozen who see it as nothing but damage
All three versions of Terapagos ex normal, Special Illustration Rare, and Hyper Rare are some of the more valuable cards in Stellar Crown, with the gold Hyper Rare version coming in at number 173/142 on the set list
Not so with Umbreon #86 - a 2010 Holofoil from HeartGold and SoulSilver's Undaunted expansion which, until recently, commanded nowhere near the same fanfare from, er, mooning fans